- 4-way stretch fabric with silpure antimicrobial helps prevent blisters while controlling odor
- Spencore material a 5/32 inch layer of this material absorbs shock and impact to provide intense comfort and cushioning
- Lightweight polysorb polyurethane foam provides heel cupping and contoured arch support
- Spencore heel plug provides extra cushioning and shock absorption in the heel
- Consumers who want targeted shock absorption for rear foot impact.